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- /*
- * Copyright (c) 2010 Broadcom Corporation
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
- #include <linux/kernel.h>
- #include <linux/etherdevice.h>
- #include <linux/module.h>
- #include <net/cfg80211.h>
- #include <net/rtnetlink.h>
- #include <brcmu_utils.h>
- #include <brcmu_wifi.h>
- #include "core.h"
- #include "bus.h"
- #include "debug.h"
- #include "fwil_types.h"
- #include "p2p.h"
- #include "cfg80211.h"
- #include "fwil.h"
- #include "fwsignal.h"
- #include "feature.h"
- #include "proto.h"
- #include "pcie.h"
- #include "common.h"
- MODULE_AUTHOR("Broadcom Corporation");
- MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
- MODULE_LICENSE("Dual BSD/GPL");
- #define MAX_WAIT_FOR_8021X_TX 50 /* msecs */
- /* AMPDU rx reordering definitions */
- #define BRCMF_RXREORDER_FLOWID_OFFSET 0
- #define BRCMF_RXREORDER_MAXIDX_OFFSET 2
- #define BRCMF_RXREORDER_FLAGS_OFFSET 4
- #define BRCMF_RXREORDER_CURIDX_OFFSET 6
- #define BRCMF_RXREORDER_EXPIDX_OFFSET 8
- #define BRCMF_RXREORDER_DEL_FLOW 0x01
- #define BRCMF_RXREORDER_FLUSH_ALL 0x02
- #define BRCMF_RXREORDER_CURIDX_VALID 0x04
- #define BRCMF_RXREORDER_EXPIDX_VALID 0x08
- #define BRCMF_RXREORDER_NEW_HOLE 0x10
- #define BRCMF_BSSIDX_INVALID -1
- /* Error bits */
- int brcmf_msg_level;
- module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR);
- MODULE_PARM_DESC(debug, "level of debug output");
- /* P2P0 enable */
- static int brcmf_p2p_enable;
- module_param_named(p2pon, brcmf_p2p_enable, int, 0);
- MODULE_PARM_DESC(p2pon, "enable legacy p2p management functionality");
- char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
- {
- if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
- brcmf_err("ifidx %d out of range\n", ifidx);
- return "<if_bad>";
- }
- if (drvr->iflist[ifidx] == NULL) {
- brcmf_err("null i/f %d\n", ifidx);
- return "<if_null>";
- }
- if (drvr->iflist[ifidx]->ndev)
- return drvr->iflist[ifidx]->ndev->name;
- return "<if_none>";
- }
- struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx)
- {
- struct brcmf_if *ifp;
- s32 bssidx;
- if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
- brcmf_err("ifidx %d out of range\n", ifidx);
- return NULL;
- }
- ifp = NULL;
- bssidx = drvr->if2bss[ifidx];
- if (bssidx >= 0)
- ifp = drvr->iflist[bssidx];
- return ifp;
- }
- static void _brcmf_set_multicast_list(struct work_struct *work)
- {
- struct brcmf_if *ifp;
- struct net_device *ndev;
- struct netdev_hw_addr *ha;
- u32 cmd_value, cnt;
- __le32 cnt_le;
- char *buf, *bufp;
- u32 buflen;
- s32 err;
- ifp = container_of(work, struct brcmf_if, multicast_work);
- brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
- ndev = ifp->ndev;
- /* Determine initial value of allmulti flag */
- cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
- /* Send down the multicast list first. */
- cnt = netdev_mc_count(ndev);
- buflen = sizeof(cnt) + (cnt * ETH_ALEN);
- buf = kmalloc(buflen, GFP_ATOMIC);
- if (!buf)
- return;
- bufp = buf;
- cnt_le = cpu_to_le32(cnt);
- memcpy(bufp, &cnt_le, sizeof(cnt_le));
- bufp += sizeof(cnt_le);
- netdev_for_each_mc_addr(ha, ndev) {
- if (!cnt)
- break;
- memcpy(bufp, ha->addr, ETH_ALEN);
- bufp += ETH_ALEN;
- cnt--;
- }
- err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
- if (err < 0) {
- brcmf_err("Setting mcast_list failed, %d\n", err);
- cmd_value = cnt ? true : cmd_value;
- }
- kfree(buf);
- /*
- * Now send the allmulti setting. This is based on the setting in the
- * net_device flags, but might be modified above to be turned on if we
- * were trying to set some addresses and dongle rejected it...
- */
- err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
- if (err < 0)
- brcmf_err("Setting allmulti failed, %d\n", err);
- /*Finally, pick up the PROMISC flag */
- cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
- err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
- if (err < 0)
- brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
- err);
- }
- static void
- _brcmf_set_mac_address(struct work_struct *work)
- {
- struct brcmf_if *ifp;
- s32 err;
- ifp = container_of(work, struct brcmf_if, setmacaddr_work);
- brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
- err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
- ETH_ALEN);
- if (err < 0) {
- brcmf_err("Setting cur_etheraddr failed, %d\n", err);
- } else {
- brcmf_dbg(TRACE, "MAC address updated to %pM\n",
- ifp->mac_addr);
- memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
- }
- }
- static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
- {
- struct brcmf_if *ifp = netdev_priv(ndev);
- struct sockaddr *sa = (struct sockaddr *)addr;
- memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
- schedule_work(&ifp->setmacaddr_work);
- return 0;
- }
- static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
- {
- struct brcmf_if *ifp = netdev_priv(ndev);
- schedule_work(&ifp->multicast_work);
- }
- static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
- struct net_device *ndev)
- {
- int ret;
- struct brcmf_if *ifp = netdev_priv(ndev);
- struct brcmf_pub *drvr = ifp->drvr;
- struct ethhdr *eh;
- brcmf_dbg(DATA, "Enter, idx=%d\n", ifp->bssidx);
- /* Can the device send data? */
- if (drvr->bus_if->state != BRCMF_BUS_UP) {
- brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
- netif_stop_queue(ndev);
- dev_kfree_skb(skb);
- ret = -ENODEV;
- goto done;
- }
- if (!drvr->iflist[ifp->bssidx]) {
- brcmf_err("bad ifidx %d\n", ifp->bssidx);
- netif_stop_queue(ndev);
- dev_kfree_skb(skb);
- ret = -ENODEV;
- goto done;
- }
- /* Make sure there's enough writable headroom*/
- ret = skb_cow_head(skb, drvr->hdrlen);
- if (ret < 0) {
- brcmf_err("%s: skb_cow_head failed\n",
- brcmf_ifname(drvr, ifp->bssidx));
- dev_kfree_skb(skb);
- goto done;
- }
- /* validate length for ether packet */
- if (skb->len < sizeof(*eh)) {
- ret = -EINVAL;
- dev_kfree_skb(skb);
- goto done;
- }
- eh = (struct ethhdr *)(skb->data);
- if (eh->h_proto == htons(ETH_P_PAE))
- atomic_inc(&ifp->pend_8021x_cnt);
- ret = brcmf_fws_process_skb(ifp, skb);
- done:
- if (ret) {
- ifp->stats.tx_dropped++;
- } else {
- ifp->stats.tx_packets++;
- ifp->stats.tx_bytes += skb->len;
- }
- /* Return ok: we always eat the packet */
- return NETDEV_TX_OK;
- }
- void brcmf_txflowblock_if(struct brcmf_if *ifp,
- enum brcmf_netif_stop_reason reason, bool state)
- {
- unsigned long flags;
- if (!ifp || !ifp->ndev)
- return;
- brcmf_dbg(TRACE, "enter: idx=%d stop=0x%X reason=%d state=%d\n",
- ifp->bssidx, ifp->netif_stop, reason, state);
- spin_lock_irqsave(&ifp->netif_stop_lock, flags);
- if (state) {
- if (!ifp->netif_stop)
- netif_stop_queue(ifp->ndev);
- ifp->netif_stop |= reason;
- } else {
- ifp->netif_stop &= ~reason;
- if (!ifp->netif_stop)
- netif_wake_queue(ifp->ndev);
- }
- spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
- }
- void brcmf_txflowblock(struct device *dev, bool state)
- {
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_pub *drvr = bus_if->drvr;
- brcmf_dbg(TRACE, "Enter\n");
- brcmf_fws_bus_blocked(drvr, state);
- }
- void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
- {
- skb->dev = ifp->ndev;
- skb->protocol = eth_type_trans(skb, skb->dev);
- if (skb->pkt_type == PACKET_MULTICAST)
- ifp->stats.multicast++;
- /* Process special event packets */
- brcmf_fweh_process_skb(ifp->drvr, skb);
- if (!(ifp->ndev->flags & IFF_UP)) {
- brcmu_pkt_buf_free_skb(skb);
- return;
- }
- ifp->stats.rx_bytes += skb->len;
- ifp->stats.rx_packets++;
- brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol));
- if (in_interrupt())
- netif_rx(skb);
- else
- /* If the receive is not processed inside an ISR,
- * the softirqd must be woken explicitly to service
- * the NET_RX_SOFTIRQ. This is handled by netif_rx_ni().
- */
- netif_rx_ni(skb);
- }
- static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi,
- u8 start, u8 end,
- struct sk_buff_head *skb_list)
- {
- /* initialize return list */
- __skb_queue_head_init(skb_list);
- if (rfi->pend_pkts == 0) {
- brcmf_dbg(INFO, "no packets in reorder queue\n");
- return;
- }
- do {
- if (rfi->pktslots[start]) {
- __skb_queue_tail(skb_list, rfi->pktslots[start]);
- rfi->pktslots[start] = NULL;
- }
- start++;
- if (start > rfi->max_idx)
- start = 0;
- } while (start != end);
- rfi->pend_pkts -= skb_queue_len(skb_list);
- }
- static void brcmf_rxreorder_process_info(struct brcmf_if *ifp, u8 *reorder_data,
- struct sk_buff *pkt)
- {
- u8 flow_id, max_idx, cur_idx, exp_idx, end_idx;
- struct brcmf_ampdu_rx_reorder *rfi;
- struct sk_buff_head reorder_list;
- struct sk_buff *pnext;
- u8 flags;
- u32 buf_size;
- flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET];
- flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET];
- /* validate flags and flow id */
- if (flags == 0xFF) {
- brcmf_err("invalid flags...so ignore this packet\n");
- brcmf_netif_rx(ifp, pkt);
- return;
- }
- rfi = ifp->drvr->reorder_flows[flow_id];
- if (flags & BRCMF_RXREORDER_DEL_FLOW) {
- brcmf_dbg(INFO, "flow-%d: delete\n",
- flow_id);
- if (rfi == NULL) {
- brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n",
- flow_id);
- brcmf_netif_rx(ifp, pkt);
- return;
- }
- brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx,
- &reorder_list);
- /* add the last packet */
- __skb_queue_tail(&reorder_list, pkt);
- kfree(rfi);
- ifp->drvr->reorder_flows[flow_id] = NULL;
- goto netif_rx;
- }
- /* from here on we need a flow reorder instance */
- if (rfi == NULL) {
- buf_size = sizeof(*rfi);
- max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
- buf_size += (max_idx + 1) * sizeof(pkt);
- /* allocate space for flow reorder info */
- brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n",
- flow_id, max_idx);
- rfi = kzalloc(buf_size, GFP_ATOMIC);
- if (rfi == NULL) {
- brcmf_err("failed to alloc buffer\n");
- brcmf_netif_rx(ifp, pkt);
- return;
- }
- ifp->drvr->reorder_flows[flow_id] = rfi;
- rfi->pktslots = (struct sk_buff **)(rfi+1);
- rfi->max_idx = max_idx;
- }
- if (flags & BRCMF_RXREORDER_NEW_HOLE) {
- if (rfi->pend_pkts) {
- brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx,
- rfi->exp_idx,
- &reorder_list);
- WARN_ON(rfi->pend_pkts);
- } else {
- __skb_queue_head_init(&reorder_list);
- }
- rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
- rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
- rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
- rfi->pktslots[rfi->cur_idx] = pkt;
- rfi->pend_pkts++;
- brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n",
- flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts);
- } else if (flags & BRCMF_RXREORDER_CURIDX_VALID) {
- cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
- exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
- if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) {
- /* still in the current hole */
- /* enqueue the current on the buffer chain */
- if (rfi->pktslots[cur_idx] != NULL) {
- brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n");
- brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
- rfi->pktslots[cur_idx] = NULL;
- }
- rfi->pktslots[cur_idx] = pkt;
- rfi->pend_pkts++;
- rfi->cur_idx = cur_idx;
- brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n",
- flow_id, cur_idx, exp_idx, rfi->pend_pkts);
- /* can return now as there is no reorder
- * list to process.
- */
- return;
- }
- if (rfi->exp_idx == cur_idx) {
- if (rfi->pktslots[cur_idx] != NULL) {
- brcmf_dbg(INFO, "error buffer pending..free it\n");
- brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
- rfi->pktslots[cur_idx] = NULL;
- }
- rfi->pktslots[cur_idx] = pkt;
- rfi->pend_pkts++;
- /* got the expected one. flush from current to expected
- * and update expected
- */
- brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n",
- flow_id, cur_idx, exp_idx, rfi->pend_pkts);
- rfi->cur_idx = cur_idx;
- rfi->exp_idx = exp_idx;
- brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx,
- &reorder_list);
- brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n",
- flow_id, skb_queue_len(&reorder_list),
- rfi->pend_pkts);
- } else {
- u8 end_idx;
- brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n",
- flow_id, flags, rfi->cur_idx, rfi->exp_idx,
- cur_idx, exp_idx);
- if (flags & BRCMF_RXREORDER_FLUSH_ALL)
- end_idx = rfi->exp_idx;
- else
- end_idx = exp_idx;
- /* flush pkts first */
- brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
- &reorder_list);
- if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) {
- __skb_queue_tail(&reorder_list, pkt);
- } else {
- rfi->pktslots[cur_idx] = pkt;
- rfi->pend_pkts++;
- }
- rfi->exp_idx = exp_idx;
- rfi->cur_idx = cur_idx;
- }
- } else {
- /* explicity window move updating the expected index */
- exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
- brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n",
- flow_id, flags, rfi->exp_idx, exp_idx);
- if (flags & BRCMF_RXREORDER_FLUSH_ALL)
- end_idx = rfi->exp_idx;
- else
- end_idx = exp_idx;
- brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
- &reorder_list);
- __skb_queue_tail(&reorder_list, pkt);
- /* set the new expected idx */
- rfi->exp_idx = exp_idx;
- }
- netif_rx:
- skb_queue_walk_safe(&reorder_list, pkt, pnext) {
- __skb_unlink(pkt, &reorder_list);
- brcmf_netif_rx(ifp, pkt);
- }
- }
- void brcmf_rx_frame(struct device *dev, struct sk_buff *skb)
- {
- struct brcmf_if *ifp;
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_pub *drvr = bus_if->drvr;
- struct brcmf_skb_reorder_data *rd;
- int ret;
- brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
- /* process and remove protocol-specific header */
- ret = brcmf_proto_hdrpull(drvr, true, skb, &ifp);
- if (ret || !ifp || !ifp->ndev) {
- if (ret != -ENODATA && ifp)
- ifp->stats.rx_errors++;
- brcmu_pkt_buf_free_skb(skb);
- return;
- }
- rd = (struct brcmf_skb_reorder_data *)skb->cb;
- if (rd->reorder)
- brcmf_rxreorder_process_info(ifp, rd->reorder, skb);
- else
- brcmf_netif_rx(ifp, skb);
- }
- void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success)
- {
- struct ethhdr *eh;
- u16 type;
- eh = (struct ethhdr *)(txp->data);
- type = ntohs(eh->h_proto);
- if (type == ETH_P_PAE) {
- atomic_dec(&ifp->pend_8021x_cnt);
- if (waitqueue_active(&ifp->pend_8021x_wait))
- wake_up(&ifp->pend_8021x_wait);
- }
- if (!success)
- ifp->stats.tx_errors++;
- brcmu_pkt_buf_free_skb(txp);
- }
- void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
- {
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_pub *drvr = bus_if->drvr;
- struct brcmf_if *ifp;
- /* await txstatus signal for firmware if active */
- if (brcmf_fws_fc_active(drvr->fws)) {
- if (!success)
- brcmf_fws_bustxfail(drvr->fws, txp);
- } else {
- if (brcmf_proto_hdrpull(drvr, false, txp, &ifp))
- brcmu_pkt_buf_free_skb(txp);
- else
- brcmf_txfinalize(ifp, txp, success);
- }
- }
- static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
- {
- struct brcmf_if *ifp = netdev_priv(ndev);
- brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
- return &ifp->stats;
- }
- static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
- struct ethtool_drvinfo *info)
- {
- struct brcmf_if *ifp = netdev_priv(ndev);
- struct brcmf_pub *drvr = ifp->drvr;
- char drev[BRCMU_DOTREV_LEN] = "n/a";
- if (drvr->revinfo.result == 0)
- brcmu_dotrev_str(drvr->revinfo.driverrev, drev);
- strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
- strlcpy(info->version, drev, sizeof(info->version));
- strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version));
- strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
- sizeof(info->bus_info));
- }
- static const struct ethtool_ops brcmf_ethtool_ops = {
- .get_drvinfo = brcmf_ethtool_get_drvinfo,
- };
- static int brcmf_netdev_stop(struct net_device *ndev)
- {
- struct brcmf_if *ifp = netdev_priv(ndev);
- brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
- brcmf_cfg80211_down(ndev);
- brcmf_net_setcarrier(ifp, false);
- return 0;
- }
- static int brcmf_netdev_open(struct net_device *ndev)
- {
- struct brcmf_if *ifp = netdev_priv(ndev);
- struct brcmf_pub *drvr = ifp->drvr;
- struct brcmf_bus *bus_if = drvr->bus_if;
- u32 toe_ol;
- brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
- /* If bus is not ready, can't continue */
- if (bus_if->state != BRCMF_BUS_UP) {
- brcmf_err("failed bus is not ready\n");
- return -EAGAIN;
- }
- atomic_set(&ifp->pend_8021x_cnt, 0);
- /* Get current TOE mode from dongle */
- if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
- && (toe_ol & TOE_TX_CSUM_OL) != 0)
- ndev->features |= NETIF_F_IP_CSUM;
- else
- ndev->features &= ~NETIF_F_IP_CSUM;
- if (brcmf_cfg80211_up(ndev)) {
- brcmf_err("failed to bring up cfg80211\n");
- return -EIO;
- }
- /* Clear, carrier, set when connected or AP mode. */
- netif_carrier_off(ndev);
- return 0;
- }
- static const struct net_device_ops brcmf_netdev_ops_pri = {
- .ndo_open = brcmf_netdev_open,
- .ndo_stop = brcmf_netdev_stop,
- .ndo_get_stats = brcmf_netdev_get_stats,
- .ndo_start_xmit = brcmf_netdev_start_xmit,
- .ndo_set_mac_address = brcmf_netdev_set_mac_address,
- .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
- };
- int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
- {
- struct brcmf_pub *drvr = ifp->drvr;
- struct net_device *ndev;
- s32 err;
- brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
- ifp->mac_addr);
- ndev = ifp->ndev;
- /* set appropriate operations */
- ndev->netdev_ops = &brcmf_netdev_ops_pri;
- ndev->hard_header_len += drvr->hdrlen;
- ndev->ethtool_ops = &brcmf_ethtool_ops;
- drvr->rxsz = ndev->mtu + ndev->hard_header_len +
- drvr->hdrlen;
- /* set the mac address */
- memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
- INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
- INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
- if (rtnl_locked)
- err = register_netdevice(ndev);
- else
- err = register_netdev(ndev);
- if (err != 0) {
- brcmf_err("couldn't register the net device\n");
- goto fail;
- }
- brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
- return 0;
- fail:
- drvr->iflist[ifp->bssidx] = NULL;
- ndev->netdev_ops = NULL;
- free_netdev(ndev);
- return -EBADE;
- }
- static void brcmf_net_detach(struct net_device *ndev)
- {
- if (ndev->reg_state == NETREG_REGISTERED)
- unregister_netdev(ndev);
- else
- brcmf_cfg80211_free_netdev(ndev);
- }
- void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on)
- {
- struct net_device *ndev;
- brcmf_dbg(TRACE, "Enter, idx=%d carrier=%d\n", ifp->bssidx, on);
- ndev = ifp->ndev;
- brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on);
- if (on) {
- if (!netif_carrier_ok(ndev))
- netif_carrier_on(ndev);
- } else {
- if (netif_carrier_ok(ndev))
- netif_carrier_off(ndev);
- }
- }
- static int brcmf_net_p2p_open(struct net_device *ndev)
- {
- brcmf_dbg(TRACE, "Enter\n");
- return brcmf_cfg80211_up(ndev);
- }
- static int brcmf_net_p2p_stop(struct net_device *ndev)
- {
- brcmf_dbg(TRACE, "Enter\n");
- return brcmf_cfg80211_down(ndev);
- }
- static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
- struct net_device *ndev)
- {
- if (skb)
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
- static const struct net_device_ops brcmf_netdev_ops_p2p = {
- .ndo_open = brcmf_net_p2p_open,
- .ndo_stop = brcmf_net_p2p_stop,
- .ndo_start_xmit = brcmf_net_p2p_start_xmit
- };
- static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
- {
- struct net_device *ndev;
- brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
- ifp->mac_addr);
- ndev = ifp->ndev;
- ndev->netdev_ops = &brcmf_netdev_ops_p2p;
- /* set the mac address */
- memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
- if (register_netdev(ndev) != 0) {
- brcmf_err("couldn't register the p2p net device\n");
- goto fail;
- }
- brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
- return 0;
- fail:
- ifp->drvr->iflist[ifp->bssidx] = NULL;
- ndev->netdev_ops = NULL;
- free_netdev(ndev);
- return -EBADE;
- }
- struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
- bool is_p2pdev, char *name, u8 *mac_addr)
- {
- struct brcmf_if *ifp;
- struct net_device *ndev;
- brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx);
- ifp = drvr->iflist[bssidx];
- /*
- * Delete the existing interface before overwriting it
- * in case we missed the BRCMF_E_IF_DEL event.
- */
- if (ifp) {
- brcmf_err("ERROR: netdev:%s already exists\n",
- ifp->ndev->name);
- if (ifidx) {
- netif_stop_queue(ifp->ndev);
- brcmf_net_detach(ifp->ndev);
- drvr->iflist[bssidx] = NULL;
- } else {
- brcmf_err("ignore IF event\n");
- return ERR_PTR(-EINVAL);
- }
- }
- if (!brcmf_p2p_enable && is_p2pdev) {
- /* this is P2P_DEVICE interface */
- brcmf_dbg(INFO, "allocate non-netdev interface\n");
- ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
- if (!ifp)
- return ERR_PTR(-ENOMEM);
- } else {
- brcmf_dbg(INFO, "allocate netdev interface\n");
- /* Allocate netdev, including space for private structure */
- ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name,
- NET_NAME_UNKNOWN, ether_setup);
- if (!ndev)
- return ERR_PTR(-ENOMEM);
- ndev->destructor = brcmf_cfg80211_free_netdev;
- ifp = netdev_priv(ndev);
- ifp->ndev = ndev;
- /* store mapping ifidx to bssidx */
- if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID)
- drvr->if2bss[ifidx] = bssidx;
- }
- ifp->drvr = drvr;
- drvr->iflist[bssidx] = ifp;
- ifp->ifidx = ifidx;
- ifp->bssidx = bssidx;
- init_waitqueue_head(&ifp->pend_8021x_wait);
- spin_lock_init(&ifp->netif_stop_lock);
- if (mac_addr != NULL)
- memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
- brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
- current->pid, name, ifp->mac_addr);
- return ifp;
- }
- static void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
- {
- struct brcmf_if *ifp;
- ifp = drvr->iflist[bssidx];
- drvr->iflist[bssidx] = NULL;
- if (!ifp) {
- brcmf_err("Null interface, idx=%d\n", bssidx);
- return;
- }
- brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx);
- if (drvr->if2bss[ifp->ifidx] == bssidx)
- drvr->if2bss[ifp->ifidx] = BRCMF_BSSIDX_INVALID;
- if (ifp->ndev) {
- if (bssidx == 0) {
- if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
- rtnl_lock();
- brcmf_netdev_stop(ifp->ndev);
- rtnl_unlock();
- }
- } else {
- netif_stop_queue(ifp->ndev);
- }
- if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
- cancel_work_sync(&ifp->setmacaddr_work);
- cancel_work_sync(&ifp->multicast_work);
- }
- brcmf_net_detach(ifp->ndev);
- } else {
- /* Only p2p device interfaces which get dynamically created
- * end up here. In this case the p2p module should be informed
- * about the removal of the interface within the firmware. If
- * not then p2p commands towards the firmware will cause some
- * serious troublesome side effects. The p2p module will clean
- * up the ifp if needed.
- */
- brcmf_p2p_ifp_removed(ifp);
- kfree(ifp);
- }
- }
- void brcmf_remove_interface(struct brcmf_if *ifp)
- {
- if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bssidx] != ifp))
- return;
- brcmf_dbg(TRACE, "Enter, bssidx=%d, ifidx=%d\n", ifp->bssidx,
- ifp->ifidx);
- brcmf_fws_del_interface(ifp);
- brcmf_del_if(ifp->drvr, ifp->bssidx);
- }
- int brcmf_get_next_free_bsscfgidx(struct brcmf_pub *drvr)
- {
- int ifidx;
- int bsscfgidx;
- bool available;
- int highest;
- available = false;
- bsscfgidx = 2;
- highest = 2;
- for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) {
- if (drvr->iflist[ifidx]) {
- if (drvr->iflist[ifidx]->bssidx == bsscfgidx)
- bsscfgidx = highest + 1;
- else if (drvr->iflist[ifidx]->bssidx > highest)
- highest = drvr->iflist[ifidx]->bssidx;
- } else {
- available = true;
- }
- }
- return available ? bsscfgidx : -ENOMEM;
- }
- int brcmf_attach(struct device *dev)
- {
- struct brcmf_pub *drvr = NULL;
- int ret = 0;
- int i;
- brcmf_dbg(TRACE, "Enter\n");
- /* Allocate primary brcmf_info */
- drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
- if (!drvr)
- return -ENOMEM;
- for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)
- drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;
- mutex_init(&drvr->proto_block);
- /* Link to bus module */
- drvr->hdrlen = 0;
- drvr->bus_if = dev_get_drvdata(dev);
- drvr->bus_if->drvr = drvr;
- /* attach debug facilities */
- brcmf_debug_attach(drvr);
- /* Attach and link in the protocol */
- ret = brcmf_proto_attach(drvr);
- if (ret != 0) {
- brcmf_err("brcmf_prot_attach failed\n");
- goto fail;
- }
- /* attach firmware event handler */
- brcmf_fweh_attach(drvr);
- return ret;
- fail:
- brcmf_detach(dev);
- return ret;
- }
- static int brcmf_revinfo_read(struct seq_file *s, void *data)
- {
- struct brcmf_bus *bus_if = dev_get_drvdata(s->private);
- struct brcmf_rev_info *ri = &bus_if->drvr->revinfo;
- char drev[BRCMU_DOTREV_LEN];
- char brev[BRCMU_BOARDREV_LEN];
- seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid);
- seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid);
- seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev));
- seq_printf(s, "chipnum: %u (%x)\n", ri->chipnum, ri->chipnum);
- seq_printf(s, "chiprev: %u\n", ri->chiprev);
- seq_printf(s, "chippkg: %u\n", ri->chippkg);
- seq_printf(s, "corerev: %u\n", ri->corerev);
- seq_printf(s, "boardid: 0x%04x\n", ri->boardid);
- seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor);
- seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev));
- seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev));
- seq_printf(s, "ucoderev: %u\n", ri->ucoderev);
- seq_printf(s, "bus: %u\n", ri->bus);
- seq_printf(s, "phytype: %u\n", ri->phytype);
- seq_printf(s, "phyrev: %u\n", ri->phyrev);
- seq_printf(s, "anarev: %u\n", ri->anarev);
- seq_printf(s, "nvramrev: %08x\n", ri->nvramrev);
- return 0;
- }
- int brcmf_bus_start(struct device *dev)
- {
- int ret = -1;
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_pub *drvr = bus_if->drvr;
- struct brcmf_if *ifp;
- struct brcmf_if *p2p_ifp;
- brcmf_dbg(TRACE, "\n");
- /* add primary networking interface */
- ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL);
- if (IS_ERR(ifp))
- return PTR_ERR(ifp);
- p2p_ifp = NULL;
- /* signal bus ready */
- brcmf_bus_change_state(bus_if, BRCMF_BUS_UP);
- /* Bus is ready, do any initialization */
- ret = brcmf_c_preinit_dcmds(ifp);
- if (ret < 0)
- goto fail;
- brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);
- /* assure we have chipid before feature attach */
- if (!bus_if->chip) {
- bus_if->chip = drvr->revinfo.chipnum;
- bus_if->chiprev = drvr->revinfo.chiprev;
- brcmf_dbg(INFO, "firmware revinfo: chip %x (%d) rev %d\n",
- bus_if->chip, bus_if->chip, bus_if->chiprev);
- }
- brcmf_feat_attach(drvr);
- ret = brcmf_fws_init(drvr);
- if (ret < 0)
- goto fail;
- brcmf_fws_add_interface(ifp);
- drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev,
- brcmf_p2p_enable);
- if (drvr->config == NULL) {
- ret = -ENOMEM;
- goto fail;
- }
- ret = brcmf_net_attach(ifp, false);
- if ((!ret) && (brcmf_p2p_enable)) {
- p2p_ifp = drvr->iflist[1];
- if (p2p_ifp)
- ret = brcmf_net_p2p_attach(p2p_ifp);
- }
- fail:
- if (ret < 0) {
- brcmf_err("failed: %d\n", ret);
- if (drvr->config) {
- brcmf_cfg80211_detach(drvr->config);
- drvr->config = NULL;
- }
- if (drvr->fws) {
- brcmf_fws_del_interface(ifp);
- brcmf_fws_deinit(drvr);
- }
- if (ifp)
- brcmf_net_detach(ifp->ndev);
- if (p2p_ifp)
- brcmf_net_detach(p2p_ifp->ndev);
- return ret;
- }
- return 0;
- }
- void brcmf_bus_add_txhdrlen(struct device *dev, uint len)
- {
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_pub *drvr = bus_if->drvr;
- if (drvr) {
- drvr->hdrlen += len;
- }
- }
- static void brcmf_bus_detach(struct brcmf_pub *drvr)
- {
- brcmf_dbg(TRACE, "Enter\n");
- if (drvr) {
- /* Stop the bus module */
- brcmf_bus_stop(drvr->bus_if);
- }
- }
- void brcmf_dev_reset(struct device *dev)
- {
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_pub *drvr = bus_if->drvr;
- if (drvr == NULL)
- return;
- if (drvr->iflist[0])
- brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
- }
- void brcmf_detach(struct device *dev)
- {
- s32 i;
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_pub *drvr = bus_if->drvr;
- brcmf_dbg(TRACE, "Enter\n");
- if (drvr == NULL)
- return;
- /* stop firmware event handling */
- brcmf_fweh_detach(drvr);
- if (drvr->config)
- brcmf_p2p_detach(&drvr->config->p2p);
- brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);
- /* make sure primary interface removed last */
- for (i = BRCMF_MAX_IFS-1; i > -1; i--)
- brcmf_remove_interface(drvr->iflist[i]);
- brcmf_cfg80211_detach(drvr->config);
- brcmf_fws_deinit(drvr);
- brcmf_bus_detach(drvr);
- brcmf_proto_detach(drvr);
- brcmf_debug_detach(drvr);
- bus_if->drvr = NULL;
- kfree(drvr);
- }
- s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len)
- {
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_if *ifp = bus_if->drvr->iflist[0];
- return brcmf_fil_iovar_data_set(ifp, name, data, len);
- }
- static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
- {
- return atomic_read(&ifp->pend_8021x_cnt);
- }
- int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp)
- {
- int err;
- err = wait_event_timeout(ifp->pend_8021x_wait,
- !brcmf_get_pend_8021x_cnt(ifp),
- msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
- WARN_ON(!err);
- return !err;
- }
- void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state)
- {
- struct brcmf_pub *drvr = bus->drvr;
- struct net_device *ndev;
- int ifidx;
- brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state);
- bus->state = state;
- if (state == BRCMF_BUS_UP) {
- for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) {
- if ((drvr->iflist[ifidx]) &&
- (drvr->iflist[ifidx]->ndev)) {
- ndev = drvr->iflist[ifidx]->ndev;
- if (netif_queue_stopped(ndev))
- netif_wake_queue(ndev);
- }
- }
- }
- }
- static void brcmf_driver_register(struct work_struct *work)
- {
- #ifdef CONFIG_BRCMFMAC_SDIO
- brcmf_sdio_register();
- #endif
- #ifdef CONFIG_BRCMFMAC_USB
- brcmf_usb_register();
- #endif
- #ifdef CONFIG_BRCMFMAC_PCIE
- brcmf_pcie_register();
- #endif
- }
- static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register);
- static int __init brcmfmac_module_init(void)
- {
- brcmf_debugfs_init();
- #ifdef CONFIG_BRCMFMAC_SDIO
- brcmf_sdio_init();
- #endif
- if (!schedule_work(&brcmf_driver_work))
- return -EBUSY;
- return 0;
- }
- static void __exit brcmfmac_module_exit(void)
- {
- cancel_work_sync(&brcmf_driver_work);
- #ifdef CONFIG_BRCMFMAC_SDIO
- brcmf_sdio_exit();
- #endif
- #ifdef CONFIG_BRCMFMAC_USB
- brcmf_usb_exit();
- #endif
- #ifdef CONFIG_BRCMFMAC_PCIE
- brcmf_pcie_exit();
- #endif
- brcmf_debugfs_exit();
- }
- module_init(brcmfmac_module_init);
- module_exit(brcmfmac_module_exit);
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